SEMINAR «VISCOUS FLUID FLOWS ALONG SUPERHYDROPHOBIC SURFACES»

28/01/2016

Alexey AgeevPhD student

January 28, 201613.00 – 14.30Room 148TPOC-3

SEMINAR ABSTRACT:

The presented PhD thesis is devoted to mathematical modeling of micro- and macroscopic flows of viscous fluid along different types of superhydrophobic surfaces will be presented. A superhydrophobic surface has a microtexture (microcavities) filled with small gas bubbles, which ensure a noticeable velocity slip of the fluid and a drag reduction effect. To describe macroscopic flows along textured superhydrophobic surfaces, an effective Navier-slip boundary condition, related the local shear stress with the effective slip velocity, is used. The proportionality coefficients in this condition are called the effective slip tensor. The main aim of the study is to propose different methods for finding this tensor coefficients for nonuniform superhydrophobic surfaces. The considered problems are:

2) evolution of a liquid thin layer on a horizontal superhydrophobic cylinder;

3) the development of a boundary integral method for Stokes flow in the vicinity of a periodic textured superhydrophobic surface with gas bubbles. A parametric study of an averaged slip coefficient was performed.

SPEAKER INTRODUCTION:

Received degree “Master of science in mechanics”, Department of Mechanics and Mathematics, M.V. Lomonosov Moscow State University (2007-2012).

Postgraduate studies at the Department of Mechanics and Mathematics, MSU (2012-2016).

Scientific researcher of the Laboratory of Mechanics of Multiphase Media, Institute of Mechanics, MSU, since 2011.